Hi there, @Kelly67.
I want to ensure you'll be able to use QuickBooks in a multi-user mode with no issues. Let's get this sorted out.
To single this issue out, we can try repairing your QuickBooks to help fix network related issues.
To do that:
- Download the QuickBooks File Doctor to your computer.
- After the download completes, double-click qbfd.exe and follow the on-screen instructions to install the QuickBooks File Doctor.
- The QuickBooks File Doctor opens automatically after installing. If you do not see it opening, look for a green wrench icon in your Windows taskbar.
- Use the drop-down list to find your company file. If you do not see your company file in the list, click the browse button and manually locate it to continue.
- Select one of the following options, Both file damage and network connectivity and Network connectivity only.
- When prompted, enter the Admin password for your company file then click Next.
- You will then be prompted to choose Host/Server or Workstation.
- Wait until the File Doctor finishes diagnosing.
For complete details about this process, you may refer to this article: QuickBooks File Doctor - Fix your Damaged Company File or Network.
Also, here's are some articles that you may check out about the multi-user access changes in QuickBooks Desktop for your future reference:
However, if the issue persists after trying these steps, I'd recommend getting in touch with our Customer Care Team. They have necessary tools like the screen-sharing that can help isolate this matter.
Please give these steps a try and let me know how it goes. I'll be around if you need additional assistance or if you have any other questions with QuickBooks. Have a great day.